To start with, when the pillar-shaped spacer is formed by stacking the color layers in such a sequence as R, G and B, and after forming the first R color layer having a thickness of 2 ??m and also the spacer portion (FIG. 6A), the G color layer material is coated to the thickness of 10 ??m in order for the next G color layer to have the thickness of 2 ??m (FIG. 6B).